Pope Francis travels to Philadelphia on Saturday for the final leg of his wildly popular inaugural tour of the United States, to greet tens of thousands of Catholics at a family festival. The pontiff will make the short flight from New York in the morning, touching down in Philadelphia at 9:30 am (1330 GMT) before heading straight to mass at the Cathedral Basilica of Saints Peter and Paul. On Sunday, he will meet with American bishops, before visiting a prison and leading a farewell mass on the Benjamin Franklin Parkway and flying out of the country in the evening.